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Finding the Fourth Proportional to 492,367.52, 679,467.66 and 266,013.20

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Solution

The fourth proportional to 492,367.52, 679,467.66 and 266,013.20 is: 367,098.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,367.52 : 679,467.66 = 266,013.20 : x
  2. Step 2: Convert to fraction form
    492,367.52/679,467.66 = 266,013.20/x
  3. Step 3: Cross multiply
    492,367.52x = 679,467.66 × 266,013.20
  4. Step 4: Simplify right side
    492,367.52x = 180,747,366,533.11
  5. Step 5: Solve for x
    x = 180,747,366,533.11/492,367.52
  6. Step 6: Final answer
    x = 367,098.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.